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<main>
<article id="content">
<header>
<h1 class="title">Module <code>py3dtilers.CityTiler.CityTiler</code></h1>
</header>
<section id="section-intro">
<details class="source">
<summary>
<span>Expand source code</span>
</summary>
<pre><code class="python">import numpy as np

from ..Common import Tiler
from .citym_cityobject import CityMCityObjects
from .citym_building import CityMBuildings
from .citym_relief import CityMReliefs
from .citym_waterbody import CityMWaterBodies
from .citym_bridge import CityMBridges
from .database_accesses import open_data_base


class CityTiler(Tiler):
    &#34;&#34;&#34;
    The CityTiler can read 3DCityDB databases and create 3DTiles.
    The database can contain buildings, bridges, relief or water bodies.
    &#34;&#34;&#34;

    def __init__(self):
        super().__init__()

        # adding positional arguments
        self.parser.add_argument(&#39;--db_config_path&#39;,
                                 nargs=&#39;*&#39;,
                                 default=[&#39;py3dtilers/CityTiler/CityTilerDBConfig.yml&#39;],
                                 type=str,
                                 help=&#39;Path(es) to the database configuration file(s)&#39;)

        self.parser.add_argument(&#39;--type&#39;,
                                 nargs=&#39;?&#39;,
                                 default=&#39;building&#39;,
                                 type=str,
                                 choices=[&#39;building&#39;, &#39;relief&#39;, &#39;water&#39;, &#39;bridge&#39;],
                                 help=&#39;identify the object type to seek in the database&#39;)

        # adding optional arguments
        self.parser.add_argument(&#39;--with_BTH&#39;,
                                 dest=&#39;with_BTH&#39;,
                                 action=&#39;store_true&#39;,
                                 help=&#39;Adds a Batch Table Hierarchy when defined&#39;)

        self.parser.add_argument(&#39;--split_surfaces&#39;,
                                 dest=&#39;split_surfaces&#39;,
                                 action=&#39;store_true&#39;,
                                 help=&#39;Keeps the surfaces of the cityObjects split when defined&#39;)

        self.parser.add_argument(&#39;--add_color&#39;,
                                 dest=&#39;add_color&#39;,
                                 action=&#39;store_true&#39;,
                                 help=&#39;When defined, add colors to the features depending on their CityGML objectclass.&#39;)

    def get_output_dir(self):
        &#34;&#34;&#34;
        Return the directory name for the tileset.
        &#34;&#34;&#34;
        if self.args.output_dir is None:
            if self.args.type == &#34;building&#34;:
                return &#34;junk_buildings&#34;
            elif self.args.type == &#34;relief&#34;:
                return &#34;junk_reliefs&#34;
            elif self.args.type == &#34;water&#34;:
                return &#34;junk_water_bodies&#34;
            elif self.args.type == &#34;bridge&#34;:
                return &#34;junk_bridges&#34;
            else:
                return &#34;junk&#34;
        else:
            return self.args.output_dir

    def get_kd_tree_max(self):
        &#34;&#34;&#34;
        The kd_tree_max is the maximum number of features in each tile when the features are distributed by a kd-tree.
        If the user has specified a value for the kd_tree_max argument, use that value. Otherwise, use the
        default value.
        :return: a int
        &#34;&#34;&#34;
        if self.args.kd_tree_max is not None and self.args.kd_tree_max &gt; 0:
            return self.args.kd_tree_max
        return int(self.DEFAULT_KD_TREE_MAX / 20) if self.args.with_texture else self.DEFAULT_KD_TREE_MAX

    def set_features_centroid(self, cursor, cityobjects, objects_type):
        &#34;&#34;&#34;
        Get the surfaces of all the cityobjects and transform them into TriangleSoup.
        Surfaces of the same cityObject are merged into one geometry.
        :param cursor: a database access cursor.
        :param cityobjects: the CityGML objects found in the database.
        :param objects_type: a class name among CityMCityObject derived classes.
        &#34;&#34;&#34;
        cityobjects_with_centroid = list()
        for cityobject in cityobjects:
            try:
                id = cityobject.get_database_id()
                cursor.execute(objects_type.sql_query_centroid(id))
                centroid = cursor.fetchall()
                if centroid is not None:
                    cityobject.centroid = np.array([centroid[0][0], centroid[0][1], centroid[0][2]])
                    cityobjects_with_centroid.append(cityobject)
            except AttributeError:
                continue
            except ValueError:
                continue
        cityobjects.objects = cityobjects_with_centroid

    def from_3dcitydb(self, cursor, objects_type):
        &#34;&#34;&#34;
        Create a 3DTiles tileset from the objects contained in a database.
        :param cursor: a database access cursor.
        :param objects_type: a class name among CityMCityObject derived classes.
                            For example, objects_type can be &#34;CityMBuilding&#34;.

        :return: a tileset.
        &#34;&#34;&#34;
        print(&#39;Retrieving city objects from database...&#39;)
        cityobjects = CityMCityObjects.retrieve_objects(cursor, objects_type)
        print(len(cityobjects), f&#39;city objects of type \&#39;{objects_type.__name__}\&#39; found in the database.&#39;)

        if not cityobjects:
            raise ValueError(f&#39;The database does not contain any {objects_type.__name__} object&#39;)

        self.set_features_centroid(cursor, cityobjects, objects_type)

        extension_name = None
        if CityMBuildings.is_bth_set():
            extension_name = &#34;batch_table_hierarchy&#34;
        return self.create_tileset_from_geometries(cityobjects, extension_name=extension_name)


def main():
    &#34;&#34;&#34;
    Run the CityTiler: create a 3DTiles tileset from the CityGML objcts contained in a 3DCityDB database.
    The tileset is writen in &#39;junk_&lt;object_type&gt;/&#39; by default.
    :return: no return value
    &#34;&#34;&#34;
    city_tiler = CityTiler()
    city_tiler.parse_command_line()
    args = city_tiler.args

    print(&#39;Connecting to database...&#39;)
    cursor = open_data_base(args.db_config_path[0])

    if args.type == &#34;building&#34;:
        objects_type = CityMBuildings
        if args.with_BTH:
            CityMBuildings.set_bth()
    elif args.type == &#34;relief&#34;:
        objects_type = CityMReliefs
    elif args.type == &#34;water&#34;:
        objects_type = CityMWaterBodies
    elif args.type == &#34;bridge&#34;:
        objects_type = CityMBridges

    objects_type.set_cursor(cursor)

    tileset = city_tiler.from_3dcitydb(cursor, objects_type)

    # A shallow attempt at providing some traceability on where the resulting
    # data set comes from:
    cursor.execute(&#39;SELECT inet_client_addr()&#39;)
    server_ip = cursor.fetchone()[0]
    cursor.execute(&#39;SELECT current_database()&#39;)
    database_name = cursor.fetchone()[0]
    origin = f&#39;This tileset is the result of Py3DTiles {__file__} script &#39;
    origin += f&#39;run with data extracted from database {database_name} &#39;
    origin += f&#39; obtained from server {server_ip}.&#39;
    tileset.add_asset_extras(origin)

    cursor.close()
    tileset.write_as_json(city_tiler.get_output_dir())


if __name__ == &#39;__main__&#39;:
    main()</code></pre>
</details>
</section>
<section>
</section>
<section>
</section>
<section>
<h2 class="section-title" id="header-functions">Functions</h2>
<dl>
<dt id="py3dtilers.CityTiler.CityTiler.main"><code class="name flex">
<span>def <span class="ident">main</span></span>(<span>)</span>
</code></dt>
<dd>
<div class="desc"><p>Run the CityTiler: create a 3DTiles tileset from the CityGML objcts contained in a 3DCityDB database.
The tileset is writen in 'junk_<object_type>/' by default.
:return: no return value</p></div>
<details class="source">
<summary>
<span>Expand source code</span>
</summary>
<pre><code class="python">def main():
    &#34;&#34;&#34;
    Run the CityTiler: create a 3DTiles tileset from the CityGML objcts contained in a 3DCityDB database.
    The tileset is writen in &#39;junk_&lt;object_type&gt;/&#39; by default.
    :return: no return value
    &#34;&#34;&#34;
    city_tiler = CityTiler()
    city_tiler.parse_command_line()
    args = city_tiler.args

    print(&#39;Connecting to database...&#39;)
    cursor = open_data_base(args.db_config_path[0])

    if args.type == &#34;building&#34;:
        objects_type = CityMBuildings
        if args.with_BTH:
            CityMBuildings.set_bth()
    elif args.type == &#34;relief&#34;:
        objects_type = CityMReliefs
    elif args.type == &#34;water&#34;:
        objects_type = CityMWaterBodies
    elif args.type == &#34;bridge&#34;:
        objects_type = CityMBridges

    objects_type.set_cursor(cursor)

    tileset = city_tiler.from_3dcitydb(cursor, objects_type)

    # A shallow attempt at providing some traceability on where the resulting
    # data set comes from:
    cursor.execute(&#39;SELECT inet_client_addr()&#39;)
    server_ip = cursor.fetchone()[0]
    cursor.execute(&#39;SELECT current_database()&#39;)
    database_name = cursor.fetchone()[0]
    origin = f&#39;This tileset is the result of Py3DTiles {__file__} script &#39;
    origin += f&#39;run with data extracted from database {database_name} &#39;
    origin += f&#39; obtained from server {server_ip}.&#39;
    tileset.add_asset_extras(origin)

    cursor.close()
    tileset.write_as_json(city_tiler.get_output_dir())</code></pre>
</details>
</dd>
</dl>
</section>
<section>
<h2 class="section-title" id="header-classes">Classes</h2>
<dl>
<dt id="py3dtilers.CityTiler.CityTiler.CityTiler"><code class="flex name class">
<span>class <span class="ident">CityTiler</span></span>
</code></dt>
<dd>
<div class="desc"><p>The CityTiler can read 3DCityDB databases and create 3DTiles.
The database can contain buildings, bridges, relief or water bodies.</p></div>
<details class="source">
<summary>
<span>Expand source code</span>
</summary>
<pre><code class="python">class CityTiler(Tiler):
    &#34;&#34;&#34;
    The CityTiler can read 3DCityDB databases and create 3DTiles.
    The database can contain buildings, bridges, relief or water bodies.
    &#34;&#34;&#34;

    def __init__(self):
        super().__init__()

        # adding positional arguments
        self.parser.add_argument(&#39;--db_config_path&#39;,
                                 nargs=&#39;*&#39;,
                                 default=[&#39;py3dtilers/CityTiler/CityTilerDBConfig.yml&#39;],
                                 type=str,
                                 help=&#39;Path(es) to the database configuration file(s)&#39;)

        self.parser.add_argument(&#39;--type&#39;,
                                 nargs=&#39;?&#39;,
                                 default=&#39;building&#39;,
                                 type=str,
                                 choices=[&#39;building&#39;, &#39;relief&#39;, &#39;water&#39;, &#39;bridge&#39;],
                                 help=&#39;identify the object type to seek in the database&#39;)

        # adding optional arguments
        self.parser.add_argument(&#39;--with_BTH&#39;,
                                 dest=&#39;with_BTH&#39;,
                                 action=&#39;store_true&#39;,
                                 help=&#39;Adds a Batch Table Hierarchy when defined&#39;)

        self.parser.add_argument(&#39;--split_surfaces&#39;,
                                 dest=&#39;split_surfaces&#39;,
                                 action=&#39;store_true&#39;,
                                 help=&#39;Keeps the surfaces of the cityObjects split when defined&#39;)

        self.parser.add_argument(&#39;--add_color&#39;,
                                 dest=&#39;add_color&#39;,
                                 action=&#39;store_true&#39;,
                                 help=&#39;When defined, add colors to the features depending on their CityGML objectclass.&#39;)

    def get_output_dir(self):
        &#34;&#34;&#34;
        Return the directory name for the tileset.
        &#34;&#34;&#34;
        if self.args.output_dir is None:
            if self.args.type == &#34;building&#34;:
                return &#34;junk_buildings&#34;
            elif self.args.type == &#34;relief&#34;:
                return &#34;junk_reliefs&#34;
            elif self.args.type == &#34;water&#34;:
                return &#34;junk_water_bodies&#34;
            elif self.args.type == &#34;bridge&#34;:
                return &#34;junk_bridges&#34;
            else:
                return &#34;junk&#34;
        else:
            return self.args.output_dir

    def get_kd_tree_max(self):
        &#34;&#34;&#34;
        The kd_tree_max is the maximum number of features in each tile when the features are distributed by a kd-tree.
        If the user has specified a value for the kd_tree_max argument, use that value. Otherwise, use the
        default value.
        :return: a int
        &#34;&#34;&#34;
        if self.args.kd_tree_max is not None and self.args.kd_tree_max &gt; 0:
            return self.args.kd_tree_max
        return int(self.DEFAULT_KD_TREE_MAX / 20) if self.args.with_texture else self.DEFAULT_KD_TREE_MAX

    def set_features_centroid(self, cursor, cityobjects, objects_type):
        &#34;&#34;&#34;
        Get the surfaces of all the cityobjects and transform them into TriangleSoup.
        Surfaces of the same cityObject are merged into one geometry.
        :param cursor: a database access cursor.
        :param cityobjects: the CityGML objects found in the database.
        :param objects_type: a class name among CityMCityObject derived classes.
        &#34;&#34;&#34;
        cityobjects_with_centroid = list()
        for cityobject in cityobjects:
            try:
                id = cityobject.get_database_id()
                cursor.execute(objects_type.sql_query_centroid(id))
                centroid = cursor.fetchall()
                if centroid is not None:
                    cityobject.centroid = np.array([centroid[0][0], centroid[0][1], centroid[0][2]])
                    cityobjects_with_centroid.append(cityobject)
            except AttributeError:
                continue
            except ValueError:
                continue
        cityobjects.objects = cityobjects_with_centroid

    def from_3dcitydb(self, cursor, objects_type):
        &#34;&#34;&#34;
        Create a 3DTiles tileset from the objects contained in a database.
        :param cursor: a database access cursor.
        :param objects_type: a class name among CityMCityObject derived classes.
                            For example, objects_type can be &#34;CityMBuilding&#34;.

        :return: a tileset.
        &#34;&#34;&#34;
        print(&#39;Retrieving city objects from database...&#39;)
        cityobjects = CityMCityObjects.retrieve_objects(cursor, objects_type)
        print(len(cityobjects), f&#39;city objects of type \&#39;{objects_type.__name__}\&#39; found in the database.&#39;)

        if not cityobjects:
            raise ValueError(f&#39;The database does not contain any {objects_type.__name__} object&#39;)

        self.set_features_centroid(cursor, cityobjects, objects_type)

        extension_name = None
        if CityMBuildings.is_bth_set():
            extension_name = &#34;batch_table_hierarchy&#34;
        return self.create_tileset_from_geometries(cityobjects, extension_name=extension_name)</code></pre>
</details>
<h3>Ancestors</h3>
<ul class="hlist">
<li><a title="py3dtilers.Common.tiler.Tiler" href="../Common/tiler.html#py3dtilers.Common.tiler.Tiler">Tiler</a></li>
</ul>
<h3>Subclasses</h3>
<ul class="hlist">
<li><a title="py3dtilers.CityTiler.CityTemporalTiler.CityTemporalTiler" href="CityTemporalTiler.html#py3dtilers.CityTiler.CityTemporalTiler.CityTemporalTiler">CityTemporalTiler</a></li>
</ul>
<h3>Methods</h3>
<dl>
<dt id="py3dtilers.CityTiler.CityTiler.CityTiler.from_3dcitydb"><code class="name flex">
<span>def <span class="ident">from_3dcitydb</span></span>(<span>self, cursor, objects_type)</span>
</code></dt>
<dd>
<div class="desc"><p>Create a 3DTiles tileset from the objects contained in a database.
:param cursor: a database access cursor.
:param objects_type: a class name among CityMCityObject derived classes.
For example, objects_type can be "CityMBuilding".</p>
<p>:return: a tileset.</p></div>
<details class="source">
<summary>
<span>Expand source code</span>
</summary>
<pre><code class="python">def from_3dcitydb(self, cursor, objects_type):
    &#34;&#34;&#34;
    Create a 3DTiles tileset from the objects contained in a database.
    :param cursor: a database access cursor.
    :param objects_type: a class name among CityMCityObject derived classes.
                        For example, objects_type can be &#34;CityMBuilding&#34;.

    :return: a tileset.
    &#34;&#34;&#34;
    print(&#39;Retrieving city objects from database...&#39;)
    cityobjects = CityMCityObjects.retrieve_objects(cursor, objects_type)
    print(len(cityobjects), f&#39;city objects of type \&#39;{objects_type.__name__}\&#39; found in the database.&#39;)

    if not cityobjects:
        raise ValueError(f&#39;The database does not contain any {objects_type.__name__} object&#39;)

    self.set_features_centroid(cursor, cityobjects, objects_type)

    extension_name = None
    if CityMBuildings.is_bth_set():
        extension_name = &#34;batch_table_hierarchy&#34;
    return self.create_tileset_from_geometries(cityobjects, extension_name=extension_name)</code></pre>
</details>
</dd>
<dt id="py3dtilers.CityTiler.CityTiler.CityTiler.set_features_centroid"><code class="name flex">
<span>def <span class="ident">set_features_centroid</span></span>(<span>self, cursor, cityobjects, objects_type)</span>
</code></dt>
<dd>
<div class="desc"><p>Get the surfaces of all the cityobjects and transform them into TriangleSoup.
Surfaces of the same cityObject are merged into one geometry.
:param cursor: a database access cursor.
:param cityobjects: the CityGML objects found in the database.
:param objects_type: a class name among CityMCityObject derived classes.</p></div>
<details class="source">
<summary>
<span>Expand source code</span>
</summary>
<pre><code class="python">def set_features_centroid(self, cursor, cityobjects, objects_type):
    &#34;&#34;&#34;
    Get the surfaces of all the cityobjects and transform them into TriangleSoup.
    Surfaces of the same cityObject are merged into one geometry.
    :param cursor: a database access cursor.
    :param cityobjects: the CityGML objects found in the database.
    :param objects_type: a class name among CityMCityObject derived classes.
    &#34;&#34;&#34;
    cityobjects_with_centroid = list()
    for cityobject in cityobjects:
        try:
            id = cityobject.get_database_id()
            cursor.execute(objects_type.sql_query_centroid(id))
            centroid = cursor.fetchall()
            if centroid is not None:
                cityobject.centroid = np.array([centroid[0][0], centroid[0][1], centroid[0][2]])
                cityobjects_with_centroid.append(cityobject)
        except AttributeError:
            continue
        except ValueError:
            continue
    cityobjects.objects = cityobjects_with_centroid</code></pre>
</details>
</dd>
</dl>
<h3>Inherited members</h3>
<ul class="hlist">
<li><code><b><a title="py3dtilers.Common.tiler.Tiler" href="../Common/tiler.html#py3dtilers.Common.tiler.Tiler">Tiler</a></b></code>:
<ul class="hlist">
<li><code><a title="py3dtilers.Common.tiler.Tiler.create_output_directory" href="../Common/tiler.html#py3dtilers.Common.tiler.Tiler.create_output_directory">create_output_directory</a></code></li>
<li><code><a title="py3dtilers.Common.tiler.Tiler.create_tileset_from_geometries" href="../Common/tiler.html#py3dtilers.Common.tiler.Tiler.create_tileset_from_geometries">create_tileset_from_geometries</a></code></li>
<li><code><a title="py3dtilers.Common.tiler.Tiler.get_color_config" href="../Common/tiler.html#py3dtilers.Common.tiler.Tiler.get_color_config">get_color_config</a></code></li>
<li><code><a title="py3dtilers.Common.tiler.Tiler.get_kd_tree_max" href="../Common/tiler.html#py3dtilers.Common.tiler.Tiler.get_kd_tree_max">get_kd_tree_max</a></code></li>
<li><code><a title="py3dtilers.Common.tiler.Tiler.get_output_dir" href="../Common/tiler.html#py3dtilers.Common.tiler.Tiler.get_output_dir">get_output_dir</a></code></li>
</ul>
</li>
</ul>
</dd>
</dl>
</section>
</article>
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<li><h3>Super-module</h3>
<ul>
<li><code><a title="py3dtilers.CityTiler" href="index.html">py3dtilers.CityTiler</a></code></li>
</ul>
</li>
<li><h3><a href="#header-functions">Functions</a></h3>
<ul class="">
<li><code><a title="py3dtilers.CityTiler.CityTiler.main" href="#py3dtilers.CityTiler.CityTiler.main">main</a></code></li>
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<h4><code><a title="py3dtilers.CityTiler.CityTiler.CityTiler" href="#py3dtilers.CityTiler.CityTiler.CityTiler">CityTiler</a></code></h4>
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<li><code><a title="py3dtilers.CityTiler.CityTiler.CityTiler.from_3dcitydb" href="#py3dtilers.CityTiler.CityTiler.CityTiler.from_3dcitydb">from_3dcitydb</a></code></li>
<li><code><a title="py3dtilers.CityTiler.CityTiler.CityTiler.set_features_centroid" href="#py3dtilers.CityTiler.CityTiler.CityTiler.set_features_centroid">set_features_centroid</a></code></li>
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